What is journalctl in systemd?

What is journalctl in systemd?

Journalctl is a command-line utility that allows you to query and display messages from the journal, which is a component of systemd that collects and manages logs.

How can I view logs for a specific service?

You can view logs for a specific service by using the command journalctl -u <service-name>, replacing <service-name> with the name of the service.

Is there a way to filter logs by time?

Yes, you can filter logs by time using options like --since and --until. For example, journalctl --since "2023-10-01" --until "2023-10-02".

Can I follow the logs in real-time?

Absolutely! You can use the -f option with journalctl, like this: journalctl -f, to follow the logs in real-time.